The Suburban 523005 is a 12-inch propane pigtail hose designed specifically to connect a portable or onboard LP cylinder to a two-stage regulator. With a Type 1 ACME nut on the tank end and a 1/4" inverted male flare on the regulator end, it delivers the correct fittings for standard RV and camper propane systems -- right out of the box, no adapters required.
Pigtail hoses like the Suburban 523005 are the short, flexible link between your propane cylinder and the inlet of a two-stage regulator. The pigtail design absorbs vibration and allows slight movement without stressing the regulator connection -- important in travel trailers, fifth wheels, and motorhomes where road vibration is constant.
The 12-inch length is the industry-standard pigtail length for most RV dual-cylinder setups. It provides enough slack to open and close the tank valve comfortably while keeping the hose routed neatly within a standard propane compartment.
Standard Type 1 ACME nut threads directly onto any DOT-approved Type 1 LP cylinder valve -- the same valve found on most 20 lb and 30 lb propane tanks used in RVs.
The regulator end uses a 1/4" inverted male flare, which mates with the standard inlet found on most two-stage RV propane regulators without additional adapters.
The hose includes thermal protection to guard against heat damage in confined propane compartments, extending service life in real-world RV conditions.
At 12 inches, this is the standard pigtail length for dual-cylinder RV regulator setups. Short enough to route cleanly, long enough to work comfortably at the tank valve.
Both ends come fully assembled with the correct fittings for connecting a standard Type 1 LP cylinder directly to a two-stage RV regulator. No thread tape, adapters, or modification needed -- just hand-tighten the ACME nut and wrench-snug the flare fitting.
Most travel trailers and fifth wheels use two 20 lb or 30 lb propane cylinders with a two-stage regulator and an automatic or manual changeover. Each cylinder connects to the regulator via its own pigtail hose. The Suburban 523005 is the correct replacement or spare for this configuration. It is also used in single-cylinder setups where a two-stage regulator is mounted separately from the tank.
Propane hoses should be inspected before each camping season and replaced if any cracking, brittleness, cuts, or scorch marks are present. A hose that passes a visual check should also be leak-tested with soapy water at every tank connection after installation. Do not use a hose showing any signs of damage.